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moby--moby/daemon/export.go
Tibor Vass b08f071e18 Revert "Merge pull request #16228 from duglin/ContextualizeEvents"
Although having a request ID available throughout the codebase is very
valuable, the impact of requiring a Context as an argument to every
function in the codepath of an API request, is too significant and was
not properly understood at the time of the review.

Furthermore, mixing API-layer code with non-API-layer code makes the
latter usable only by API-layer code (one that has a notion of Context).

This reverts commit de41640435, reversing
changes made to 7daeecd42d.

Signed-off-by: Tibor Vass <tibor@docker.com>

Conflicts:
	api/server/container.go
	builder/internals.go
	daemon/container_unix.go
	daemon/create.go
2015-09-29 14:26:51 -04:00

28 lines
684 B
Go

package daemon
import (
"io"
derr "github.com/docker/docker/errors"
)
// ContainerExport writes the contents of the container to the given
// writer. An error is returned if the container cannot be found.
func (daemon *Daemon) ContainerExport(name string, out io.Writer) error {
container, err := daemon.Get(name)
if err != nil {
return err
}
data, err := container.export()
if err != nil {
return derr.ErrorCodeExportFailed.WithArgs(name, err)
}
defer data.Close()
// Stream the entire contents of the container (basically a volatile snapshot)
if _, err := io.Copy(out, data); err != nil {
return derr.ErrorCodeExportFailed.WithArgs(name, err)
}
return nil
}